Muck Boot Woodymax Rubber Insulated Women's Hunting Boot Rubber Rubber sole Shaft measures approximately 13" from arch Heel measures approximately 1 1/2" Platform measures approximately 1" Boot opening measures approximately 14 1/4" around 5 mm neoprene provides comfort and flexibility, along with excellent waterproofing, shock absorption and heat retention properties; adjusts to the shape of your feet to resist blisters and chafing Fleece lining is soft for enhanced comfort, durable for long wear, and provides exceptional warmth in frigid environments; comfort rated from -40 F to 40 F (-40 C to 4 C) 2 mm thermal foam under footbed for warmth and adaptive cushioning Lightweight EVA midsole for additional cushioning; women's last is designed to match the contours of the female foot High-grade rubber exterior provides extra toughness and makes for a 100% waterproof hunting boot; MS-2 bobbed molded outsole reduces weight and improves stability for climbing and trekking